For THE COURIER-POST HANNIBAL â Three galleries in Downtown Hannibal will partner for a Second Saturday Open House to be held from 1 to 6 p.m. Saturday, March 13, at Alliance Art Gallery, Gallery 310 and the Hannibal Arts Council. The event is designed to encourage the public to enjoy Downtown Hannibal, visit the participating galleries, view works by featured artists and see the latest works for sale by all the artists involved in the galleries/exhibits. The Alliance Art Gallery, 112 N. Main St., will feature guest artist and photographer Tim Schroll. Gallery 310, 310 N. Main St., will be open for its first Second Saturday Open House for 2021.